Shedding mechanism for jacquard looms



Oct. 4, 1932.

Filed Sept. 9, 1929 4 Sheets-Sheet 1 722 venor Ger/var d/zae bier Htorne Oct. 4, l HAEBLER 1,881,076

SHEDDING MECHANISM FOR JACQUARD LOOMS Filed Sept. 9, 1929 4 Sheets-Sheet 2 eyrw-entpr Gerhard Haaebler y ()ct.'4, 1932'. c. HAEBLER 1,881,076

snsnnme MECHANISM FOR JACQUARD LOOMS Filed Sept. 9, 1929 4 Sheets-Sheet 3 yr; v-enlor Gzrhard/faeler li atented (let. 4, 1932 gmTEs PATENT @FFIQE ssnnnnn transmit, or BREsLAn, GERMANY, ASSIGNOR. or ONE-HALF r 'rnnononn HAEBLER, on NEW YORK, N. Y.

,SHEDDING MEonAnrsr/r Application filed September 9, 1929, Serial No.

' Various propositions have been put forregistering a is used in combination witha light sensitive cell, which may be of any known type, selenium or other, to close or to leave-open electric circuits for the movement or otherwise of the cords and malls of the jacquard harness, as relative movement of the drawing and thecell takes place point by point of the said drawing to present a light or dark point of the latter to the cell. i

' With such an arrangement all the cords of a Jacquard loom, which are to be lifted, may be lifted rapidly and the pickthen takes place,

the whole operation of shedding being so rapid that the loom may be operated to its full speed capacity. If for instance the speed is to be two picks per second, and there are .n mails to the loom, then every point of the drawing which takes the place of a jacquard card may afiect the sensitivecell'at the :longest for a of a second for the purpose of fluctuation by the light sensitive cell for that time.

For a Jacquard loom with 500 mails and two picks per second, then,for every point .in the drawing there isrequired one-thousandth of a second of time in which the registration takes place of such pointby the sensitive cell. The short current impulses of the sensitive cell may be strengthened by known means in order to operate relays which by 7 means of magnets will lift or repelthe-cords of the harness, as required.

' The invention may be carried out in two divisions if desired, the first part consisting in registering lightor dark points of the pat- FOR JACQUABID LOOMS 391,361, and in Germany September 13, 1928.

tern drawing and for instance magnetizing accordingly a moving steel band, wire or the like which in its turn will move between or past induction coils which will actuate through current reinforcing means and magnets the jacquard harness. The band or the like is in this case a pattern card having the jacquard lifting design magnetized upon it.

Poulsen many years ago showed the way in this, that a steel wire or steel band could be magnetically influenced in varying degrees as it moved past amagnet or magnets, andthat by subsequently moving theband or wire adjacent to induction coils varying degrees ofcurrent could be obtained according to the strength of magnetization of the band or wire at various points, to operate for instancea telephone transmitter as often as desired to repeat vibrations which through magnets originally magnetized the bandor wire. This system I can utilize for my purposes in one form of my invention, viz: the formation of a pattern card for use in a J acquard loom.

' The invention will now be described fully by way of example in the forms at present best known to me, reference being had to the accompanying drawings which are schematic. The illustration of details of, construction of magnets, current reinforcing means and so on is considereduunecessary, as these are well known. In the drawings Fi 1 *isadiagram of the apparatus provide with a light sensitive cell which is slidable. Fig. 2 is a diagram showing a modififcation-of'theapparatus provided with a stationary light sensitive cell.

Figures 3 and 4 are further schematic views, to illustrate respectively the preparation and the application of a steel band having the pattern design magnetized thereon; and Figure 5 is a detailshowing the use of a light cell.

It may be stated first in reference to this Figure 5 that s is a pencil of light-the rays of which pass through a hole It in a cell m coveredwith fiat plates of selenium u as seen in the figure, the rays falling on the drawing on which the pattern has been prepared, and

which drawing will be hereinafter called the pattern. From the latter the raysare reflected as shown, on the selenium surfaces.

Referring now to Figure 1, for each cord or the like 6 in the loom harness there is provided an electro-magnet d and a. relay of suitable form 0. In'the instant that any point of the pattern the reinforce-r g bya lead The reinforcor may also bean electric battery,-and it is connected with the sliding contact member 7 by a lead 16, and with the light sensitive cell m by leads 17 and 18. Each relay 0 is provided witha stationary contact f which serves to transmit current-from the reinforcer g to an appropriate relay'c when the sliding con- -tact-f comes in contact with the stationary contact'p'ertaining to such relay, and the circuit is closed. The circuit is not closed how- 'plate'20 1b and the light sensitive cell mare moved' 7 with the contact member f. The drum a- V electro-technics may beus'ed, for instance the 7 any point is either positively .ever unless completed bythe light sensitive cell m. The movement of the sliding contact member f is effected by any suitable crank and connecting rod 21, and the light which carries the pattern in light and dark spotsor points is rotated from time to time, to vary the pattern,by any approved means.

- In Fig. 2 the corresponding parts are arranged in a different way, and the light 6 and the light sensitive cell m are stationary. The

drum a is rotated to correspond with the movements of the contact f, and the drum is moved longitudinallyfrom time to time to vary the pattern. v v I It may be here noted, that pattern points of varying shades need not be considered, as a part of the design or is a blank space thereof, and it follows therefore that a cord e is'either lifted or not lifted. As'soon as the various cords e arein'their positions as affected by the movement of .the pattern and the operation of the relays cand magnets (Z, theseoperations taking the fraction of a second, the picktakes place and through an automatic circuit breaker 2', Figure 1,,all the relays and magnetsare thenreturned to-theirfirst condition for the next'pick, for which nextpickthe pattern movesonl l I do not bind myself tothe use of any special typeof sensitive cell, as any known'in difl'use reflex type or the known form in which a reflector-glass is used. 1 1 V V T'he,feeling of the pattern may be efon a is illuminated to affect.- the light sensitive cell m a current re1nforc of any convenient construction,

An electric bat tained as the respect to Fig. 1". Additional electromagconstruction which I am now describing, is placed on a drum, the light being thrown upon a patternpoint, as shown in Figure 1-.

Any other form of"bearer' for the pattern, may be employed however to achieve the ob ject desired. a a

It is to be expressly noted that for ever' cord 6 an electromagnet d is provided, as well as a relay 0, whilst the current reinforcer y can serve generally for all relays together with a sliding contact f.

The points of the pattern which are to be afiected may be in groups for one and the same pick, as will be understood, with the provision of a plurality of cells and light pencils. A very high speed may be thus at each pencil of light may thus only affect a limited number of pattern points.

In carrying out the invention it will be seen that with the help, of the desired ap- 'paratus a film, wire, steel'band, roller, plate or other device may be electrically, magnetically or mechanically so influenced or altered that. by means of any of these latter intermediaries the actual movement of the cords e of the harness may be effected according to the pattern. The whole arrangement would in that arrangement be in two parts, or divisions, cal preparation of a card, and the'use of this card for eifecting the loom shedding.

The card may form a very cheap and efficient substitute for the usual costly'jacquard Fig. 3 shows a means for forming the pattern on a steel band 1. The electric impulses from the battery or reinforcer gare used to energize electromagnets 72 to which the reinforcer is connected by leads 24 and 25. These, electromagnets 10' are caused to magnetize' the steel band 1, which passes overv rollers 01. which are rotated by any approved means. Thesurface of the band 1 is mag-v netized in spots as it is moved at'a constant speed in syn chronism with the movements of the light sensitive cell :a. pattern is formed on the band.

In Fig. the bandis shown inoperation.

The magnetized spots or points on the'band passingbetween the electromagnets is cause fluctuations in the current which passes to relays c, as hereinbefore described with nets l0 are'also provided, and are similar to the electromagnetsls. These additional electromagnets are 'operatively connected wlth an as will be seen later, viz: electrior points by induction, and

and sliding contact member f, l

additional reinforcer or battery g" V a slidable contact member These parts operate to ensure a perfect registration of the pattern magnetized on the band 1 with the original pattern on the drum. 7 The slidable contact member 7' is driven by any approved crank and connecting rod as hereinbefore described.

Between each pick of the loom, all the relays 0, all the electromagnets (Z, and all the jacquard cords e, are controlled in regular order by the contact member 7, and whether or not a cord is operated depends upon whether or not current is passed into the relay pertaining to it by the contact member f. This in turn depends upon the initial impulse or variation imparted to the current, when the circuit is closed by the light sensitive cell m, and this in turn is due to the lightness or darkness of the spots or points which form the pattern.

I claim 1. In a jacquard operating device, a series of jacquard cords, a separate electric magnet for operating each cord, a relay connected to eachelectromagnet and having an electric contact, a contact member, means for placing the said contact member in electric engage- ,ment with all the contacts of the relays one after another in regular order between each pick of the loom, an electric circuit connecting all the electromagnets and relays with the said contact member, and means for varying the current in the said" circuit according to a predetermined pattern as each relay is placed in regular order in electric engagement with the said contact member, the electromagnets being thereby energized more or less,

and in regular order, and the cords being operated according to the pattern.

2. A jacquard operating device as set forth in claim 1, the said means for varying the current comprising a travelling steel band magnetized in spots or points of its length to form a predetermined pattern, the spots or points being in separate series arranged one after another, each series corresponding to the contact members of the relays, and electromagnets arranged one on each side of the said band and included in the said circuit and operating to vary the currentto the relays one after another in regular order and according to the patterns on the steel band.

3. In a jacquard operating device, a series v of jacquard cords, an electric circuit provided with a series of electric devices for operating each jacquard cord independently of the others, each said electric device being provided with a separate electric contact, a contact member slidable to make contact with the said electric contacts one after the other in regular order, a pattern having light and dark spots or points, a light sensitive cell included in the electric circuit and controlled by the said pattern and secured to the contact member to move therewith, and means for sliding the said contact member and light current comprising a pattern having light and dark spots or points, and a light sensitive cell included in the said circuit and controlled by the said pattern, the said pattern and cell being movable with respect to each other and being timed to correspond with the periodic action of the contact member upon the electric contacts.-

In testimony whereof I have hereunto set my hand.

GERHARD HAEBLER. 

